SPT-1 100FT 18/2 Electrical Wire - Flexible 18 Gauge Lighting Wire

In this review of the SPT-1 100FT 18/2 Electrical Wire the bottom line is simple: this is a practical, low-voltage hookup wire best suited for DIY lighting and small appliance runs where flexibility and ease of use matter. The reviewer found the 18 gauge twin conductor construction and PVC VW-1 coating deliver reliable performance for uses at 120V or below, and the 100ft length offers good value for projects like LED strips, garden lighting, and speaker connections.

Key Features

• 18 gauge, 2 conductor: Provides a balanced combination of current capacity and flexibility for low-voltage lighting and small appliance runs.
• 100ft length: A single spool covers multiple fixtures or a long run without needing splice points, reducing installation time.
• PVC VW-1 coating: The flame retardant insulation helps resist aging, moisture, and acids for longer term installations.
• Wide temperature range: Rated from -40F to +276.8F so it remains pliable in cold conditions and stable under typical warm environments.
• Easy to handle: Thin, soft conductors are easy to strip, crimp, solder, and route into tight spaces for neat wiring runs.
• 300V maximum working voltage: Suitable for low-voltage applications and safe use on circuits at 120V or less.

Who It's For

This wire is aimed at homeowners, hobbyists, and installers working on indoor and low-voltage outdoor projects such as LED lighting strips, accent lights, garden path lights, outdoor speakers, and solar accessory wiring. Its flexibility and manageable diameter make it a good choice when routing through confined spaces or wrapping around fixtures.

It is not intended for high-voltage mains distribution or heavy-load appliance circuits that require thicker conductors or different insulation types; professionals handling permanent high-voltage wiring should choose products rated specifically for those systems.

Pros & Cons

Pros

• Flexible 18 gauge conductors are easy to strip and connect, making installations quicker.
• Durable PVC VW-1 insulation offers flame retardant and moisture resistant protection.
• Good value for a 100ft spool when doing multiple low-voltage lighting runs.
• Temperature rating allows use in a wide range of climates without stiffening.

Cons

• Insulation thickness is SPT-1 standard (0.76mm) which is thinner than SPT-2 and may not suit installations needing heavier insulation.

Specifications

Wire gauge	18 AWG
Conductors	2
Length	100 ft
Maximum working voltage	300V (suitable for 120V or less)
Insulation material	PVC VW-1
Insulation thickness	0.76 mm (SPT-1)
Temperature range	-40F to +276.8F

Our Verdict

The SPT-1 100FT 18/2 Electrical Wire is a practical choice for DIYers and installers needing a flexible, flame retardant hookup wire for low-voltage lighting and similar runs. It balances ease of use, durability, and length to deliver solid value for indoor and appropriate outdoor applications while noting that installations requiring thicker insulation should consider SPT-2 alternatives.

Frequently Asked Questions

Can this wire be used for outdoor garden lighting?
Yes, it is suitable for low-voltage outdoor uses like garden and path lights, but ensure connections are protected from direct water exposure.

Is this wire easy to strip and crimp?
Yes, the 18 AWG conductors are thin and soft, making them straightforward to strip, solder, and crimp for most connectors.

How does SPT-1 differ from SPT-2?
SPT-1 has thinner insulation (0.76 mm) compared with SPT-2 (about 1.4 mm), so SPT-1 is more flexible but less robust against abrasion.